Official US Pricing $269.99
https://usacart.yitechnology.com/collections/preorder-the-4k-action-cam-now/products/4k-action-camera

Gearbest has it for $249.99 - 8% coupon [GB16SALE] = $229.99, listed as international version.
http://www.gearbest.com/action-cameras/pp_360138.html?vip=151848
This is the lowest price so far for people who wants to pre-order, not sure how long the coupon is going to last, so get it while you can :)